Hi and welcome. I know that you want to download best wireless driver for your notebook, but before any downloads, we recommend to clean your operating system with this and then install drivers to get best results (expectations) from latest or updated drivers for your Acer Aspire E5-573G-38W8. Then download desired Wireless Wi-fi driver for Windows 7, Windows 8 and Windows 10 from here for broadcom wireless device(free downloads)

Attention ! If the driver not working for you, then maybe you need to install some prerequisites for windows